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OLEGan [10]
3 years ago
11

3х - 5 = 13 solve the equation

Mathematics
2 answers:
icang [17]3 years ago
5 0

Answer:

x=6

Step-by-step explanation:

3(6)-5=13

18-5=13

13=13

LuckyWell [14K]3 years ago
3 0

Answer:

6

Step-by-step explanation:

3x - 5 =13

3x =15 +3

3x =18

x=18 :3

x=6

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zaharov [31]

\bold{\text{Answer:}\quad \dfrac{\sqrt2}{144}}

<u>Step-by-step explanation:</u>

When you plug in 3 directly to the equation, you get 0/0

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\dfrac{d}{dx}(\sqrt{5+\sqrt{2x+3}}-2\sqrt2)\quad = \dfrac{1}{2\sqrt{5+\sqrt{2x+3}}(\sqrt{2x+3})}\\\\\\f'(3)\ \text{for the numerator}\ =\dfrac{1}{12\sqrt2}\\\\\\\\\dfrac{d}{dx}(x^2-9) = 2x\\\\\\f'(3) \text{for the denominator}\quad = 6\\\\\\\dfrac{f'(3)\ \text{numerator}}{f'(3)\ \text{denominator}}\quad = \dfrac{\dfrac{1}{12\sqrt2}}{6}\quad = \dfrac{1}{72\sqrt2}\quad \rightarrow \large\boxed{\dfrac{\sqrt2}{144}}

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